fix cms.uncompress

zhaozg · Apr 6, 2024 · 1bdb047 · 1bdb047
1 parent 81fb784
commit 1bdb047
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/src/cms.c b/src/cms.c
@@ -238,14 +238,14 @@ static int openssl_cms_compress(lua_State *L)
 uncompress cms object
 @function uncompress
 @tparam cms cms
-@tparam bio input
+@tparam[dcont=nil] bio the compressed content is detached.
 @tparam[opt=0] number flags
 @treturn string
 */
 static int openssl_cms_uncompress(lua_State *L)
 {
   CMS_ContentInfo *cms = CHECK_OBJECT(1, CMS_ContentInfo, "openssl.cms");
-  BIO *in = load_bio_object(L, 2);
+  BIO *in = lua_isnoneornil(L, 2) ? NULL : load_bio_object(L, 2);
   int flags = luaL_optint(L, 3, 0);
   BIO *out = BIO_new(BIO_s_mem());